Shut-off for gage-cocks.



F. d: F. A. CHENETTE.

` SHUT-OFF FOR GAGE GOGKS.

APPLICATION FILED Nov. 6, 1913.

` `above 200 PATNT liili`ll CHENETTE, 0F

NORCESTER, MASSACHUSETTS.

SHUT-OFF FOR GAGE-COCKS.

Specication of Letters-Patent.

Patented Aug. 11, 1914.

Application filed November 6, 1913. Serial No. 799,483.

To all 'whom t may concern lle it known that We, FREDERICK Cnnnn'r'rn and FRAM; A. CHENETTF., citizens of the United States, said Fnnnsnicn CH @Mirra residing at St. Albans, in the county oi Franklin, State el Vermont, and said FRANK A. Gunn-MTE residing at lVoi-cester, county of Worcestem State of Massachusetts, have invented a` new and vuseful Shut-0H for Gage- Cocks, of which the following is a specification.

This invention relates to gage cocks used in locomotives under high pressure. The valve seats of locomotive gage cocks frequently become rough or corroded and cause them to leak. in this class of engines and this leakage of steam is not only expensive as a matter of operation but is extremely disagreeable to the engineers and dangerous to their health, especially in cold weather. It is also likely at any time to be the cause of accidents because the clouds of steam rising about the engineer tend to confuse him and prevent his having a clear view of the track ahead. The engineers often come in from a run Wet to the skin by this escape of steam and this` (bviously is dangerous to their health.

'The prlncipal object oi this invention 1s L to provide a practicable and efficient means for preventing this difficulty by enabling the engineer to take oil" his gage cock plug and regrind the seat when he is away from heath quarters and Without necessitating the loss of steam or drawing his lires.

Te are aware of have been granted for devices alleged to aci complish a somewhat similar result. So far as We are aware these are all of such construction that they Would be impracticable and useless on locomotives and would even be practically valueless for use on stationary engines under such a head of steam as is ordinarily used on a locomotive, namely pounds.

Reference is to be had to the accompanying drawing in which the figure is a central longitudinal sectional view of a locomotive gage cock constructed in accordance with this invention.

The gage cock is shown as comprising a casing 2 having an inlet 3 at one end and a drip 4 at the other. Between them is a transverse partition 5 having a longitudinal passage provided with a valve seat 6 on the The service is especially hard outer'side. Back of this partition is an enlarged chamber 'having a partition 8 provided With a transverse passage having a valve seat 9 on one side.

From the description so far given, it Will be seen that this part of the gage cock is in the main like those ordinarily used on locomotives. under high pressure and under the constant vibration experienced in this class of englues as has been demonstrated by use.

A valve plug l1 is provided as usual for the seat on the transverse partition. This plug has a stem threaded at 12 and fitting a threaded bushing 13 secured on the valve casing by screw threads or the like. A packing 14 is indicated under a threaded cap l5 and the bushing is shown as provided With a space 16 beyond the threads While the casing is shown as provided With a space 17 at the other end of the thread to permit the adjustment which Will take place when the valve seat has been trued off. The threaded stem 12 is shown as provided with an enlargement 18 fitting in a bore in the casing to give a bigger bearing surface and free play for a seat grinding tool when the plug is Withdrawn. On the valve seat 9 lits a shut oil valye 22 having a bearing in a bore in the casing in alinement With the valve seat 9. This shut 0H is provided with a screw thread 23 fitting a similar thread in a bushing 24, which is screwed on the valve casing. The

f valve is moved back and forth by operating the fact that patents" .It is entirely practical for use f the usual Wheel 25 fixed on the end of the valve stem and packing 26 is shown under the screw cap 27. Y

In the use of the device the shut off -22 is normally drawn back, preferably to its limiting position, so as to allow free passage of steam through the casing and to the gage cock plug 1l. This plug is used in the ordinary Way until such time as it begins to leak through the drip 4. Then the lshut off 22 is closed down on its seat and the bushing 13 removed With the valve 11. Thenk the seat 6 can be trued up in any ordinary Way. This can be done by a simple tool v.vhich can be guided in the passage through which the stem passes and can be carried in the usual tool kit on the locomotive. It Will be seen, therefore, that to use the device for the purpose intended, it Will not be necessary to draw the fires nor to lose even a this, it will be obviousthat the valve seatwhen the locomotive is in ut of course this will be a 9 can be trued u the round house krare occurrence because this shut ofi' is used very seldom. Moreover, if this valve seat should get to leaking, it will have no serious .effect because the leakage will occur only while regrinding and there is no way 1n which it can escape out into the atmosphere except through the drip in the regular way.

Although we have illustrated and described a single embodiment of the invention, we are aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed 1n the claims therefore we do not wish to be limited to all the details 'of construction herein shown and described, but

What we do claim is:-

1. In a locomotive gage cock, the combination with a casing having an inlet at one end and a drip near the other and provided with an integral transverse partition having a valve seat on the outer side thereof, an enlargement behind said partition, a second integral partition having a longitudinal c'entral portion provided with a valve seatvin said enlargement, and a passage in the end in alinement with the first valve seat, the walls of said passage-being integral with said casing, of a longitudinal bushing screwed on the end of said casing and having a screw thread therein, a gage cock plug provided with a screw threaded portion {itting said screwthread and adapted to control the valve seat in the transverse partition, whereby said bushing and valve will be applied and removed together, said valve having an enlarged cylindrical portion litting said passage in the end of the casing and guided thereby, a shut oi valve arranged transversely to said gage cock plug 'having a screw thread for receiving the shank of the shut oli?y valve, whereby said shut oif valve will be removed and replaced with the second bushing.

2. In a locomotive gage cock, the combina-l tion with a casing having an inlet at one end and a drip near the other and provided with a transverse partition having a valve seat on the outer side thereof, 'an enlargement behind said partition, a second partition having a longitudinal central portion provided wlth a valve seat in sald enlargement, and a passage 1n the end 1n alinement with the first valve seat, of a longitudinal bushing l screwed on the end of said casing and having a screw thread therein, a gage cock plug provided with a screw threaded portion fitting said screw thread and adapted to control the valve seat in the transverse partition, said valve having an enlarged cylindrical portion litting said passage in the end of the casing, a shut oil' valve arranged transversely to said gage cock plug and adapted to fit the valve seat in the longitudinal partition, said casing having" a passage for guiding said shutoff valve and said shut off valve having a screw threaded shank, and a bushing transverse to the first named bushing screwed on said casing and having a screw thread for receiving and guiding the shut ofi' valve, said valve and plug each having a wheel on the end for operating the same.

In testimony whereof we have hereunto set our hands, in the presence of two subscribing witnesses. f

FREDERICK OHENETTE. FRANK A. CHENETTE.

Witnesses:

ALBERT E.' FAY, C. Fonknsr WEssoN. 

